Four people were treated in hospital for smoke inhalation after a late-night apartment fire in East York on Saturday.
Firefighters and other emergency responders were dispatched to a high-rise at 95 Thorncliffe Park East, near Overlea Boulevard, just before 10:30 p.m. after a fire was reported on the 41st floor.
Crews brought the blaze under control quickly, preventing it from spreading beyond one apartment. However, smoke affected the surrounding floor and had to be cleared from the area.
Toronto Fire Services identified a lithium-ion battery as the suspected source of the fire, though investigators have yet to determine what caused it to ignite.
Four people were taken to hospital for smoke inhalation, with no additional injuries reported. Authorities confirmed the fire was out shortly after midnight.